Zebra-Tech Hydro-Wiper L User manual

Hydro-Wiper L
Self-contained Anti-fouling Wiper for the
Seapoint Fluorometer
Installation and Operation Manual

Hydro-Wiper Installation and Operation Manual
Contents
1. Hydro-Wiper at a glance........................................................................................... 1
Features ................................................................................................................. 2
2. Hydro-Wiper specifications ...................................................................................... 3
Specifications ......................................................................................................... 3
Options .................................................................................................................. 3
3. Hydro-Wiper components ........................................................................................ 4
Wiper body ............................................................................................................ 4
Wiper control housing ........................................................................................... 5
Electrical cable ....................................................................................................... 6
Field tool kit ........................................................................................................... 6
4. Preparing for deployment ........................................................................................ 7
Fitting the Seapoint Fluorometer into the instrument clamp................................ 7
Adjusting wiper brush pressure ............................................................................. 7
Mounting the wiper body ...................................................................................... 7
Mounting the wiper control housing ..................................................................... 8
Securing the wiper cable........................................................................................ 8
5. Operating the Hydro-Wiper...................................................................................... 9
Opening and closing the wiper control housing .................................................... 9
Installing the battery.............................................................................................. 9
Setting the wipe interval...................................................................................... 10
LED Status Indicator ............................................................................................. 11
During deployment .............................................................................................. 11
6. Maintenance.......................................................................................................... 12
Replaceable Hydro-Wiper parts........................................................................... 12
Servicing the Wiper Control Housing O-ring ........................................................ 12
7. Troubleshooting..................................................................................................... 13
Wipe failure ......................................................................................................... 13
Low battery shutdown ......................................................................................... 13
8. Further assistance .................................................................................................. 14

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1. Hydro-Wiper at a glance
FIGURE 1: HYDRO-WIPER L WITH SEAPOINT FLUOROMETER FITTED
The Hydro-Wiper L is a mechanical wiper system designed to fit easily to the Seapoint
Fluorometer. Using a regular gentle brushing action, the Hydro-Wiper keeps the optical
window of the Seapoint Fluorometer clean from bio-fouling and other unwanted deposits
such as mud.
The Hydro-Wiper reduces the need for costly site visits to manually clean the instrument,
maintaining data integrity throughout long deployments.

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Features
Your Hydro-Wiper L offers the following features:
Easy to install and simple to operate
Ultra-low power consumption for long term deployments
High precision wipe interval timing for minimal clock drift during long
deployments
Slip clutch protects gear box from damage if the wiper arm is knocked
Brush design that has been extensively field proven in extreme conditions
around the world
On board self monitoring for reliable operation; if the wiper arm is knocked
in front of the instrument face, the wiper arm automatically moves to one
side.

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2. Hydro-Wiper specifications
Specifications
Wipe Interval:
User select (15, 30, 45, 60, 120, 180, 240, 300, 360 or 720 mins)
Clock Accuracy:
+/- 1 minute per year (0-40oC)
Power Supply:
6 x alkaline AA batteries
Power Consumption:
Quiescent, 0.02mA, ~80mA during a wipe
Deployment Endurance:
Wipe interval dependent. In excess of 4 months with a 2 hour
wipe interval
Brush:
User replaceable
Battery Housing O-ring:
#142 (2 3/8” x 3/32”)
Construction:
Passivated Stainless steel, Acetal
Wiper Shaft:
Multiple bearing support with quad ring seal
Depth Rating:
30 meters as standard
Cable:
EPDM jacketed cable between the wiper and battery housing
(1 meter standard length)
Cable Entry:
Cable glands with strain relief, O-ringed puck and resin back fill
TABLE 1: HYDRO-WIPER L SPECIFICATION TABLE
Options
The following additional options are also available with your Hydro-Wiper L product:
Extended Depth Rating:
100 meters
Connectors:
Impulse wet pluggable connectors on the wiper and/or battery
housing
Cable:
Additional cable between the wiper and battery housing
External Trigger:
External trigger input to control the wipe operation
TABLE 2: HYDRO-WIPER OPTIONAL EXTRAS

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3. Hydro-Wiper components
Your Hydro-Wiper L is supplied as a fully self-contained and complete system. It consists of
the following components:
Wiper body, to which the Seapoint Fluorometer is attached
Wiper control housing. In addition to the batteries, the wiper control
housing contains the control electronics, power switch, wiper interval select
switch and diagnostic LED.
An electrical cable connecting the wiper body to the control housing
Field tool kit.
Wiper body
Seapoint
Fluorometer
Wiper Motor
and Gearbox
Wiper Brush
FIGURE 2: HYDRO-WIPER L BODY
Sensor
Clamp
Wiper Arm

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The wiper body consists of:
Wiper motor and gearbox
Wiper shaft position sensing system
Wiper arm with brush.
Mounting clamp for the Seapoint Fluorometer.
Wiper control housing
The wiper control housing contains:
Batteries
Control electronics
On/off power switch
Wipe interval select switch
Diagnostic LED indicator.
FIGURE 3:
HYDRO-WIPER L
CONTROL HOUSING
FIGURE 4: INSIDE THE HYDRO-WIPER L CONTROL HOUSING

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Electrical cable
The Hydro-Wiper L is fitted with 1 meter of cable between the wiper body and control
housing as standard. However, the length of cable required varies depending on the type
of installation. Additional cable can be fitted at the factory when the Hydro-Wiper is built.
Please specify the cable required when ordering.
Field tool kit
The field tool kit supplied with the Hydro-Wiper L contains:
Lid shifting tool
O-ring pick
Spare control housing O-ring
O-ring grease
Replacement set of batteries
Screwdriver for adjusting the wipe interval switch.

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4. Preparing for deployment
Fitting the Seapoint Fluorometer into the
instrument clamp
Insert the Seapoint Fluorometer into the clamp so that the Hydro-Wiper brush swings
across the optical window of the Seapoint Fluorometer. The brush arm can be manually
moved to check the Seapoint Fluorometer is correctly positioned. Ensure the Hydro-Wiper
is switched off when manually rotating the wiper brush. Reposition the Seapoint
Fluorometer if necessary. Tighten the clamp set screw to secure the Seapoint Fluorometer
into the clamp.
Adjusting wiper brush pressure
The brush is mounted on an adjustable arm. The length of the arm controls the brush
pressure applied to the face of the Seapoint Fluorometer. This has been factory set and
should not need adjustment.
The success of the Hydro-Wiper is based on the brush sweeping lightly across the optical
window at regular intervals –it is not a scrubbing action. If there is excessive pressure, the
life of the brush will be reduced and damage to the optical surface of the Seapoint
Fluorometer may occur. If the brush pressure is insufficient, contact between the brush
and optical window will be lost in the centre of the window and fouling may occur.
If it is necessary to adjust the brush pressure, loosen the lock nut at the end of the wiper
arm and rotate the wiper arm in the desired direction. Tighten the lock nut after
adjustment.
Mounting the wiper body
Use the brackets located on the back of the wiper body to attach it to the desired
mounting structure.

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Mounting the wiper control housing
Use the marine grade (316) stainless steel bracket attached to the wiper control
housing to attach the wiper control housing to the required structure.
Securing the wiper cable
Use cable ties to secure the wiper cable to avoid possible snags and fouling.
NOTE!
Avoid attaching the bracket directly to a metal structure. Doing so
can cause electrolysis, which may result in rapid deterioration of the
metal parts.
NOTE!
Do not allow the cable to constantly move with the water currents as
fatigue and eventual failure may result.